ORACLE 变量定义

 1 DECLARE  
 2         v_productid        productinfo.productid%TYPE;
 3       v_productname        VARCHAR2(20);
 4       v_productprice    　 NUMBER(8,2);
 5           v_quantity    　 NUMBER(10);
 6        v_desperation   　　CONSTANT v_productname%TYPE:=‘测试‘;
 7        
 8        v_spitgr           SIMPLE_INTEGER := 99.9;
 9        v_long             LONG :=‘long类型测试‘;
10        v_date             DATS :=SYSDATE;
11 BEGIN
12     SELECT productid,productname,productprice,quantity
13     INTO v_productid,v_productname,v_productprice,v_quantity
14     FROM productinfo
15     WHERE pro = ‘0240040001‘;
16     
17   DBMS_OUTPUT.PUT_LINE(‘v_productid = ‘       || v_productid);
18   DBMS_OUTPUT.PUT_LINE(‘v_productname = ‘     || v_productname
19                              ||    ‘ 长度 = ‘||LENGTH(v_productname));
20   DBMS_OUTPUT.PUT_LINE(‘v_productprice = ‘    || v_productprice);
21   DBMS_OUTPUT.PUT_LINE(‘v_quantity = ‘        || v_quantity);
22   DBMS_OUTPUT.PUT_LINE(‘v_desperation = ‘     || v_desperation);
23   DBMS_OUTPUT.PUT_LINE(‘v_spitgr = ‘          || v_spitgr);
24   DBMS_OUTPUT.PUT_LINE(‘v_long = ‘    　　　　 || v_long);
25   DBMS_OUTPUT.PUT_LINE(‘v_date = ‘    　　　　 || v_date);
26 END;